2 Right Triangle Trigonometry

In This Chapter

2.1 Angles and Their Measure

2.2 Right Triangle Trigonometry

2.3 Trigonometric Functions of Special Angles

2.4 Trigonometric Functions of General Angles

      Chapter 2 Review Exercises

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A slice of pizza is an example of a circular sector. See Problem 73 in Exercises 2.1.

A Bit of History The early rudiments of trigonometry are found in the milieu of mathematics that sprang from the works of Greek, Egyptian, Indian, Islamic, and Chinese mathematicians. The word trigonometry is derived from two Greek words: trigon meaning triangle and metra meaning measurement. Thus the name trigonometry refers to the ...

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